The use of historical and radiocarbon dating of eruptions in LaMEVE over time. (a) Percentage of eruptions dated using historical methods between 0–2 ka, calculated in 100 year bins. (b) Percentage of eruptions dated using 14C from 2.5-70 ka, calculated in 2,500 year bins. The peak at 56 ka is the Congo (CGT) eruption from Coatepeque Caldera (El Salvador), constrained using high sensitivity 14C analysis; see Rose et al. (1999) for details. For (a) and (b) bin sizes were selected to be larger than typical uncertainties in the age determinations.